a-c:b+b:b+c

There’s ambiguity in "a-c:b+b:b+c" because ":" can mean division and operator precedence matters. I’ll give the standard interpretation (division has higher precedence than subtraction/addition).

Interpretation: a - (c/b) + (b/b) + c

• b/b = 1
• So expression = a - (c/b) + 1 + c
• Rearranged: a + c + 1 - (c/b)

If you want a single fraction:

• E = (ab + bc + b - c) / b

Alternative interpretation (if the intended grouping was (a - c)/b + (b/b) + c):

• E = (a - c)/b + 1 + c

Let me know which grouping you intended, and I can tailor the steps.